nyctagineus or Mirabilis nyctaginea
|Lowers leaves of Heartleaf
Four-o'clock are glabrous (hairless) and have petioles 1 cm long or longer.
Flowers of Heartleaf Four-o'clock drop their petals after a short period
of blooming. Plants are often seen with just the calyx remaining, as in
the last two photos.
Compare to Hairy Four-o'clock (Mirabilis hirsuta) , which has pubescent leaves with no petioles. Stems of Hairy Four-o'clock are also pubescent. Some references suggest that M. hirsuta and M. nyctaginea might hybridize.
Compare to Narrowleaf Four-o'clock (Mirabilis linearis), which has narrow, linear leaves.
|Time of bloom:||June - August|